ICATE 21876
INSTITUTO DE CIENCIAS ASTRONOMICAS, DE LA TIERRA Y DEL ESPACIO
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
Chemical analysis of early-type stars with planets
Autor/es:
CALVO, D.; JAQUE ARANCIBIA, M.; SAFFE, C.; ALACORIA, J; MARTÍN GIRARDI, G.; COLLADO, A.; MIQUELARENA, P.; FLORES, M; GUNELLA, F.
Lugar:
Santiago
Reunión:
Conferencia; ESO - Five years after HL Tau: a new era in planet; 2020
Institución organizadora:
ESO, NRAO (NAASC + ngVLA), ALMA
Resumen:
To date, important metallicity trends are known for the case of late-type stars with planets, while early-type stars with planets are comparatively poorly studied. In this contribution, we present some preliminary results obtained for a sample of early-type stars with planets (mostly A-type stars) with and without planets. We want to study the possible relation between the presence of planets and the λ Boötis chemical pattern. The λ Boötis stars are a group of chemically peculiar objects on the upper main-sequence, showing underabundances (1-2 dex) of iron peak elements and near-solar abundances of C, N, O and S. We also want to search for possible trends between the stellar metallicity and planetary characteristics such as the mass and radius.
